尝试使用 C# 和 WPF 在文本框中调整 TextBox + 字体大小，只能做一个或另一个
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Trying to resize TextBox + font size in text box with C# and WPF, can only do one or the other
提问by sdouble
I'm trying to resize the textbox and the text inside of the textbox when the window is resized. I seem to be able to do one or the other, but not both at once.
我试图在调整窗口大小时调整文本框和文本框内的文本的大小。我似乎可以做一个或另一个，但不能同时做。
Resizing the textbox works, but I can't resize the text inside:
调整文本框大小有效，但我无法调整里面的文本大小：
Code for above example:
上面例子的代码：
<Grid Grid.Row="1">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="133*"/>
<ColumnDefinition Width="20*"/>
<ColumnDefinition Width="20*"/>
</Grid.ColumnDefinitions>
<Button Content="Button" Grid.Column="2"/>
<Button Content="Button" Grid.Column="1"/>
<TextBox TextWrapping="Wrap" VerticalContentAlignment="Center"/>
</Grid>
Or resizing the font works, but I can't make the textbox fill the viewbox I'm using:
或者调整字体大小有效，但我无法让文本框填充我正在使用的视图框：
Code for above example:
上面例子的代码：
<Grid Grid.Row="1">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="133*"/>
<ColumnDefinition Width="20*"/>
<ColumnDefinition Width="20*"/>
</Grid.ColumnDefinitions>
<Button Content="Button" Grid.Column="2"/>
<Button Content="Button" Grid.Column="1"/>
<Viewbox Stretch="Uniform">
<TextBox TextWrapping="Wrap" VerticalContentAlignment="Center"/>
</Viewbox>
</Grid>
Using Stretch="Fill" (on the right track, but I'd rather keep it uniform, and UniformToFill does something weird that I can't even see what's going on)
使用 Stretch="Fill"（在正确的轨道上，但我宁愿保持统一，而 UniformToFill 做了一些奇怪的事情，我什至看不到发生了什么）
回答by kmatyaszek
You can use converter.
您可以使用转换器。
public class FontSizeConverter : IValueConverter
{
public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
{
double actualHeight = System.Convert.ToDouble(value);
int fontSize = (int)(actualHeight * .5);
return fontSize;
}
public object ConvertBack(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
{
throw new NotImplementedException();
}
}
XAML:
XAML：
....
<Window.Resources>
<local:FontSizeConverter x:Key="fontSizeCon" />
</Window.Resources>
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="9*" />
<RowDefinition Height="1*" />
</Grid.RowDefinitions>
<Grid Grid.Row="1">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="133*"/>
<ColumnDefinition Width="20*"/>
<ColumnDefinition Width="20*"/>
</Grid.ColumnDefinitions>
<Button Content="Button" Grid.Column="2"/>
<Button Content="Button" Grid.Column="1"/>
<TextBox TextWrapping="Wrap" VerticalContentAlignment="Center"
FontSize="{Binding Path=ActualHeight, RelativeSource={RelativeSource Mode=FindAncestor, AncestorType=Grid}, Converter={StaticResource fontSizeCon}}"/>
</Grid>
</Grid>
...
Result:
结果：
回答by Animus Miles-Militis
Would something like this be suitable?
这样的东西合适吗？
<Grid Grid.Row="1">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="133*"/>
<ColumnDefinition Width="20*"/>
<ColumnDefinition Width="20*"/>
</Grid.ColumnDefinitions>
<Button Content="Button" Grid.Column="2"/>
<Button Content="Button" Grid.Column="1"/>
<Viewbox StretchDirection="Both" Stretch="Uniform">
<TextBox Text="some text"></TextBox>
</Viewbox>
</Grid>
